While vaping is not risk free, it is less harmful than tobacco Our World in Data Vaping Around Babies How Secondhand Vapor Smoke Can Harm Kids Secondhand Smoke vs Vape: What the Science Says Is Vaping Better Than Smoking? American Heart Association Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Vaping refers to the act of inhaling and exhaling aerosol, often called vapor, produced by an electronic cigarette or similar device. These devices heat a liquid that usually contains nicotine, flavorings, and